How can I filter out null values in SQL?
An example of an AI chatbot conversation about filtering null values in SQL queries.
How can I filter out null values in SQL?
You can use the WHERE clause with the IS NOT NULL condition to filter out null values. For example: SELECT * FROM table_name WHERE column_name IS NOT NULL;
What if I want to filter multiple columns for null values?
You can combine conditions using AND. For example: SELECT * FROM table_name WHERE column1 IS NOT NULL AND column2 IS NOT NULL;
Is there a way to replace null values instead of filtering them out?
Yes, you can use the COALESCE function to replace null values. For example: SELECT COALESCE(column_name, 'default_value') FROM table_name;
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